Mold.



M. BOAL. MOLD.

APPLIUATION FILED MAY 15, 1912. 1,095,791. Patented May 5, 1914.

3 SHEETS-SHEET 1.

Figi.

ffy ,g

mame/wko@ [Varian M. BOAL.

' MOLD.

APPLIOATION FILED MAY 15. 1912..

Patented May 5, 1914.

3 SHEETS-SHEET 2.

@mam/hoz Marion oal.

@fm/mmm COLUMBIA PLANOGRAPH C04,wASmNUTON. D. c.

M. BOAL.

3 BHEETS-SHEET 3.

31am/Moz [I4/a ri 0 n 0 a l.

l'ovnca Patented May 5, 1914.

fly/2, @Imi/humus sfrars rar rie MARION BOAL, OF COSHOCTON, OHIO, ASSIGNOR OF ONE-THIRD TOWARNER HAY AND ONE-THIRD TO GEORGE M. GRAY, BOTH OF COSHOCTON/OHIO.

MOLD.

built in courses which are divided up into sections in the form of blocks having open spaces at their meeting ends so that the wall is provided with dead air spaces which will resist the passage of heat, cold and moisture.

The invention also has for its object to provide a novel construction ot dividing plates and cores, and a novel combination and arrangement of parts to be hereinafter described and claimed.

In order that the invention may be better understood, reference is had to the accompanying drawings forming a part ot this specification, in which drawings- Figure l is a plan view ot' a fragment of the mold. Fig. 2 is a side-elevation thereof. Fig. 3 is a vertical section on the line 8 8 of Fig. 2. Fig. 4 is a perspective view of one of the dividing plates and cores. Fig.

5 is a horizontal section on the line 5-5 of Fig. 4. Fig. G is a plan view of a modified form ot mold. Fig. 7 is a perspective view ot one of the dividing plates and core employed in the last-mentioned mold. Fig. S is a perspective view of a stripp-ing board. Fig. 9 is a perspective view, partly broken away, showing :mother form of mold. Fig. 10 is a perspective view ot a dividing plate and core used in the last-mentioned mold. Fig. 11 is a perspective view of one end of the face plate of the mold. Fig. 12 is a perspective view of a stripp-ing board.

Referring specifically to the drawings, the frame of the mold shown in Figs. 1 and 2 consists of longitudinal upper and lower parallel rails l5 and 1G, respectively, located in front and at the rear oit the mold. These rails carry, on their inner sides, face plates 17 which are spaced apart slightly at their adjacent vertical ends. The tace plates are fastened to the rails by bolts 18 which may be secured by wing nuts 19. The length of the rails and the number of face Specification of Letters Patent.

Application ined May 15, 1912.

Patented May 5, 1914. Serial No. 697,483.

plates employed will depend on the length of the course or the number of blocks to be molded, and may be varied accordingly. rlhe face plates may have plain, rock or any other kind of faces.

Extending transversely between the tace plates, at regular intervals, are dividing pla-tes 2O carrying vertical cores 21, the height ot said plates and cores corresponding to the height of the blocks to be molded. 1 The dividing plates extend at their ends into the space between the adjacent vertical ends of the tace plates and have lateral bends or hooks 22 which seat in rabbets 23 made in the edge ot one of thetace plates. By this structure, the dividing plates are securely held in place, and the front and rear frame members ot the mold and the tace plates carried thereby are held spaced apart a distance corresponding` to the thickness of the blocks to -be molded. The cores are plates which are secured to the sides of the dividing plates and extend divergingly therefrom in opposite directions, their outer ends being connected by a curve. The inner ends of the core plates have inturned lianges 24 which are bolted to the dividing plates. The cores are closed on top by a plate 25 provided with a handle 2G. The plates 20 determine the lines ot division between the blocks, and as the cores extend from both sides thereof, it will be seen that the blocks are formed with registering dead air spaces in their adjacent ends. The cores are slightly tapered downward to facilitate their withdrawal.

The mold is designed to form the blocks directly on the wall, each bloclr being separated from the other and bonded in the center of the block underneath, as shown in Fig. 2. Any number of mold sections may be employed to make blocks the full length of the wall around the building.

Fig. 2 shows how the mold is supported on the linished portion ot the wall. The mold frame tits between front and rear vertical posts 27 located at suitable intervals on the wall, said posts rising from the wall a sufficient distance so that the mold may be set therebetween on top of the last course. The front and rear posts are connected by rods 2S which extend across Athe top of thelast course and pass through the posts and brackets 29 fastened to the outer faces thereof. Wing nuts 30 screwed on the threaded ends of the rods against the brackets secure the rods and hold the posts in place on the wall. The upper ends et the posts are reduced in thickness as shown in Fig. 3 to accommodate the frame member of the mold and bring the tace plates flush with the faces ot the linished blocks. At 3l is shown by dotted lines in Fig. l a strip-ping board which is placed on top of each mold section when the cores are withdrawn.

F ig. G shows a mold in which the blocks are formed in two sections-a front and a rear section, these sections being spaced apart so that the wall is given a continuons dead air space. This result is eiiected by providing dividing plates 32 similar to the ones already described but having outstanding flat plates 33 secured to opposite sides thereoil by angle irons 34. These plates extend in the direction of the length of the block and correspond to the height thereof. The length of the plates is such that their ends meet, so that a continuous air space is made in the wall. The dividing plates are also provided with a suitable handle 35.

Fig. 8 shows aA stripping plate employed in the last described mold. it will be noted. that this stripping pla-te has an opening 37 corresponding in outline to that ot' the dividing plate 32 and the plates 33, so that they may be withdrawn.

In the two forms of mold herein described, the vert-ical joints will be lilled and pointed out after the blocks are linished on the wall. The molds are easy to operate and handle and are simple in construction and can be operated by one man.

Fig. 9 shows a mold for forming the blocks faceedown, the blocks not being molded directly on the wall as in the hereinbetore described molds. The frame of this mold comprises longitudinal upper and lower parallel rails 38 to the inside of which are secured, by bolts or other suitable means 39, plates l0 which mold the top and bottoni of the blocks. These rails and plates may be the rails and face plates of the molds hereinbefore described, provided, of course, plain face plates are employed. The plates Ll0 are spaced endwise sufficiently to accommodate the ends of the dividing plates and cores to be presently described. The mold frame is held in set up position by posts 4l located on opposite sides thereof and connected at the top by a crossbeam 42. Set screws 43 are threaded through the posts to bear against the rails 88.

The dividing plates employed in this form of mold are each in two sections, indicated at 4A. These two sections are placed between the frame members so as to extend entirely across the mold and form the dividing lines between the blocks. The outer ends ot the plate [it in the spaces between the adjacent ends of the plat-es /l-O, and have tongues L5 which extend outward between the top and bottom rails 38. ln the tongues is a. slot i6 through which is driven a wedge i7 said wedge being in contact with the outer face of the plate 10. Each section 414 has oppositely extending core-pieces 4:8 similar to the cores 2l, said core-pieces however being positioned in the mold horizontally, as the blocks are molded facedown. The core-pieces 4S ot the respective sections le meet at their inner ends and their outer ends are tapered inwardly to facilitate their withdrawal from the finished block. The core-pieces ot one section may have tenons 49 which seat in mortises 50 in the core-pieces of the other section.

lt will be understood, ot course, that the 'frame members of the mold must be spread sufficiently to permit the dividing plates and their corespieces to be placed therebetween, atter which the iframe members may be closed up and secured in place by the set-screws 48.

I claim:

A mold having face-plates provided with rabbeted edges, said tace-plates being spaced endwise, dividing plates fitting at their ends between the ends of the taceplates and having hook-shaped ends seat-ing in the rabbets, and cores extending from opposite sides of the dividing plates.

in testimony whereof l atlix my signature in presence of two witnesses.

MARION BOAL. `Witnesses FRANK E. PoarnRnNn, Trioinxs A.. GRAY.

Copies of this patent may be obtained for ve cents each, by addressing the Commissioner of Patents,

` Washington, D. C. 

